GPU Comparison
RADEON
AMD Radeon 660M
CORE STATE
Rembrandt
VRAM
System Shared
CLOCK SPEED
1900 MHz
TDP
40 W
BUS WIDTH
System Shared
ARCHITECTURE
RDNA 2.0
PROCESS
6 nm
LAUNCH DATE
2022
VS
RADEON
Radeon HD 6770
CORE STATE
Juniper
VRAM
1024 MB
CLOCK SPEED
—
TDP
108 W
BUS WIDTH
128 bit
ARCHITECTURE
TeraScale 2
PROCESS
40 nm
LAUNCH DATE
2011
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
660M
HD 6770
Core Specs
Shading Units
384
800
+108.3%
Shaders
384
800
+108.3%
TMUs
24
40
+66.7%
ROPs
16
16
0.0%
Compute Units
6
10
+66.7%
Clocks
Base Clock
1500 MHz
—
Boost Clock
1900 MHz
—
GPU Clock
—
850 MHz
Memory Clock
System Shared
1200 MHz
4.8 Gbps effective
Memory
Memory Size
System Shared
1024 MB
VRAM (MB)
—
1,024
Memory Type
System Shared
GDDR5
Memory Bus
System Shared
128 bit
Bandwidth
System Dependent
76.80 GB/s
Cache
L1 Cache
128 KB per Array
8 KB (per CU)
L2 Cache
2 MB
256 KB
L0 Cache
32 KB per WGP
—
Performance
Pixel Rate
30.40 GPixel/s
13.60 GPixel/s
Texture Rate
45.60 GTexel/s
34.00 GTexel/s
FP32 (TFLOPS)
1,459.2 GFLOPS
1,360.0 GFLOPS
FP64 (TFLOPS)
91.20 GFLOPS (1:16)
—
FP16 (TFLOPS)
2.918 TFLOPS (2:1)
—
AI/RT
RT Cores
6
—
Power
TDP
40 W
108 W
TDP (W)
40
108
+170.0%
Suggested PSU
—
300 W
Power Connectors
None
1x 6-pin
Architecture
Architecture
RDNA 2.0
TeraScale 2
GPU Name
Rembrandt
Juniper
Generation
Navi II IGP
(Rembrandt Mobile)
Northern Islands
(HD 6700)
Process Size
6 nm
40 nm
Transistors
13,100 million
1,040 million
Die Size
208 mm²
166 mm²
Foundry
TSMC
TSMC
Density
63.0M / mm²
6.3M / mm²
API Support
DirectX
12 Ultimate (12_2)
11.2 (11_0)
OpenGL
4.6
4.4
Vulkan
1.4
—
OpenCL
2.0
1.2
Shader Model
6.8
5.0
Physical
Slot Width
IGP
Dual-slot
Length
—
198 mm
7.8 inches
Outputs
Portable Device Dependent
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
Bus Interface
PCIe 4.0 x8
PCIe 2.0 x16
Other
Launch Price
—
129 USD
Production
End-of-life
End-of-life
Predecessor
Vega II IGP
Evergreen
Successor
Navi III IGP
Southern Islands